Loudspeaker



FIG. 1 is a front perspective view of a loudspeaker showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side elevational view of one side thereof;

FIG. 5 is a side elevational view of the opposite side thereof; and,

FIG. 6 is a top view thereof.

The broken lines and unshaded areas form no part of the claimed design. 

CLAIM The ornamental design for a loudspeaker, as shown and described. 